v3.25.4
RETIREMENT BENEFITS - Net (Benefit) Expense (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure      
Percentage of the significant plans over global pension and postretirement liabilities, which utilize quarterly measurement policy 90.00%    
Amortization of unrecognized:      
Total net expense (benefit) $ 26 $ 28 $ 14
U.S. | Pension Plans      
Defined Benefit Plan Disclosure      
Net (benefit) expense, location Other operating Other operating Other operating
Defined Benefit Plan, Net Periodic Benefit Cost      
Service cost $ 0 $ 0 $ 0
Interest cost on benefit obligation 475 466 505
Expected return on assets (602) (602) (640)
Amortization of unrecognized:      
Prior service cost (benefit) 2 2 2
Net actuarial loss (gain) 195 179 151
Curtailment loss (gain) 0 0 0
Settlement loss (gain) 0 0 0
Total net expense (benefit) 70 45 18
U.S. | Postretirement Benefit Plans      
Defined Benefit Plan, Net Periodic Benefit Cost      
Service cost 0 0 0
Interest cost on benefit obligation 14 16 18
Expected return on assets (10) (11) (13)
Amortization of unrecognized:      
Prior service cost (benefit) (9) (9) (9)
Net actuarial loss (gain) (12) (10) (12)
Curtailment loss (gain) 0 0 0
Settlement loss (gain) 0 0 0
Total net expense (benefit) (17) (14) (16)
Non-U.S. | Pension Plans      
Defined Benefit Plan, Net Periodic Benefit Cost      
Service cost 110 115 115
Interest cost on benefit obligation 423 421 409
Expected return on assets (374) (326) (327)
Amortization of unrecognized:      
Prior service cost (benefit) (3) (3) (5)
Net actuarial loss (gain) 66 76 72
Curtailment loss (gain) (3) (3) (16)
Settlement loss (gain) 9 5 9
Total net expense (benefit) 228 285 257
Non-U.S. | Postretirement Benefit Plans      
Defined Benefit Plan, Net Periodic Benefit Cost      
Service cost 1 1 1
Interest cost on benefit obligation 118 107 106
Expected return on assets (74) (80) (77)
Amortization of unrecognized:      
Prior service cost (benefit) (6) (7) (9)
Net actuarial loss (gain) 11 10 (18)
Curtailment loss (gain) 0 0 0
Settlement loss (gain) 0 0 0
Total net expense (benefit) $ 50 $ 31 $ 3